Grinding-machine.



PATENTBD OCT. 13, 1903.

H. D. HIBMRD.. GRINDING MACHINE.

APPLUATIN FILED: .LUNE 21, 1902.

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NO MODEL.

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No. I741,336.

PATENTED 0G11'. 13, 1903.

H. D, HI'BBAED. GRINDING MACHINE.

APPLICATION FILED JUNE 21, 1902.

N0 MODEL.

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APPLIOATION FILED JUNEiZl, 1902.

N0 MODEL.

Willessm ivo. 741,336.

Uthman Smntrns Patented October 13, 1903 Arnnim Ormea..

HENRY D. HIBBARD, OF PLAINFIELD, NEl/V JERSEY, ASSIGNOR TO MANGA- NESE STEEL SAFE COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEV JERSEY.

GRINDING-IVIACHiNE.

SPEQIFICATION forming part of Letters Patent No. 741,336, dated October 13, 1903.

Application led .Tune 21, 1902. Serial No. 112,571. (No model.)

To @ZZ whom, t may concern,.-

Be it known that I, HENRY D. HIBBARD, a citizen of the United States, residing in Plainfield, in the county of Union and State of New Jersey, have invented certain new and useful Improvements inGriuding-Machiuespf which the following is a specification.

My present invention relates to mechanism for finishing plane surfaces-such, for inro stance, as those on cast or Wrought metal or other dense material. In the mechanism shown and described herein as an illustration of an embodiment of myinvention, but which is in no Wise intended to limit the application or uses of the latter, I have introduced certain instrumentalities which are more particularly adapted either to accurately finish surfaces which have previously been shaped by cutting-tools or to remove stock in order zo to properly shape the resultant surface, the term finished used herein being intended to apply to either of the operations mentioned. vVhen used for the last-mentioned purpose, my invention will be found especially appli- ,25 cable for operation upon bodies composed of material Whose hardness -precludes the use of ordinary cutting-tools. Other uses of my invention will, however, readily suggest themselves to those skilled in the art to which it 3o appertains.

In the mechanism shown I have introduced among other improvements a combination of a driving means with a driven stock-removing instrumentality,'the drst mentioned being rigidly connected with the member on which the other is mounted, both said driving means and said instrumentality being connectedly adjustable to the stock to be operated upon, so that the instrumentality may 4o be adapted for use in different positions While maintaining one and the same relation with the driving means. By this means I avoid the necessity of readjusting belts or other powercommunicating devices in order to adapt them to each change of position of the stockremoving instrumentality. Furthermore, in order to adapt my invention for use upon large and heavy bodies of material I have provided means for shifting both the 5o driving and the driven members longitudinallyf of the machine and have thereby avoided the necessity for mounting upon said machine the object which is to be operated upon. I also provide means for angularly adjusting the slides on which the stock-removing instrumentalities, which are herein shown as grinding-Wheels, are mounted, and I thereby adapt my invention for operating upon parts which may be transversely angular relative to the plane of the ways ofthe machine. By providing a plurality of the angularly-adjustable slides and of the operative members and the arbors mounted on said slides a plurality of surfaces angular with each other may be operated upon at the sainetime,and the means for moving several separate combinations ot' the members mentioned longitudinally of the machine may be common to all of said members.

In the machine shown and described herein as an illustration of one form of my invention two stock-removing instrumentalities in the form of grinding mechanisms are shown; but I do not limit myself to any particular form or number of such elements and in that respect, as in other matters of detail, may adapt my invention to the specific requirements of particular uses.

In the drawings, Figure 1 is a front elevation of a machine, parts of the shears being broken away. Fig. 2 is an end elevation thereof looking from the right of Fig. 1. Fig. 3 is a top plan view of the machine as shown in Fig. l. Fig. 4L is a perspective elevation of a cross-rail. Fig. 5 is a similar view of a part of an angularly-adjustable plate. Fig. 6 is a perspective elevation of a detached grinding mechanism and of the driving elements thereof. Fig. 7 is a horizontal transverse sec- .tion taken on the line A A, Fig. 1, certain tive view, looking from the left, Fig. l, of a part of the machine-shears and of members Figs. 12 and 13 are illusmounted thereon.

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trations of a feed-rod and a detachable pivot connection combined therewith; and Fig. 14 is a perspective View, looking from the right, Fig.,1, of a part of the machine-shears and of members mounted thereon. Figs. 11 to 14, inclusive, are on a larger scale than the others.

Like reference-marks indicate like parts throughout the drawings.

On legs L L are mounted shears S, on which are formed ways, such as W, on which a carriage 2 may be mounted and be slid lengthwise of the machine. On the carriage 2 is erected a plurality of columns 3 3, herein shown as two in number, and is formed with Ways 3' 3', on which cross-rails4 4 may be severally mounted and slid toward and from the carriage 2 by means ot' elevating-screws 3" 3", journaled in the columns 3 3, respectively. Bevel gear-wheels 3"' are shown herein mounted upon the outer ends ofthe screws 3" 3" and meshing with bevel-pinions 3b 3", mounted on shafts 3fL 3a, which are journaled crosswise of the columns 3 3 and are severally furnished with hand-wheels 3C 3C. Each crossrail 4 is transversely slotted, as at 4', near each end thereof. (See Fig. 4.) On a stud 4" on each cross-rail 4 is pivotallykmounted an angularly-adjustable plate 5, into which may be tapped binding-bolts 5' 5', which pass through the slots 4' 4', and each has a head which may be engaged with the cross-rail 4, through which the bolts pass.

A graduated arc 4a may be described on each cross-rail 4, the same being located in part in this instance upon a suitable projection on the rail, and an index-pointer 4b is attached tothe angularly-adjustable member 5 to indicate on the graduated arc 4FL the angle formed by the adjustable member and the cross-rail. Vays 5" 5" are formed on the angularly-adjustable plates 5 5, respectively, on which slides 6 6 may be mounted to slide to and fro transversely of the machine. Arloors 7 7 are rotatably mounted in journalboxes 6' 6', which may be bracketed to each slide 6, and on each arbor and near an end thereof, as shown, is mounted a suitable operative member, herein shown as a grindingwheel S.

A feed-screw shaft 9 is journaled in and lengthwise of each slide 6, and each engages a nut 9', secured to the corresponding pivoted plate 5. A hand-wheel 9" and a ratchetwheel 9"' are fixed upon each feed-screw., and aspring-pressed double-acting pawl 10 (see more particularly Fig. 14) rocks on a pivot fixed on a slotted arm 10', and the latter in turn rocks on the feed-screw shaft 9. A perforated clamp l1, shiftable in the slot 10" of the rocking arm 10', may be secured in position by a thumb-nut 1l and washer 11". A rocking pivot 12 may pass through the clamp 11 and be secured in place by jamnuts 1212'. rPhe pivot 12 has a head 12" perforated transversely to receive a feedrod 13, and the pivot may be slid lengthwise of said rod, or the latter may be retained in any desired position in said pivot-body 12" by a set-screw 12"', herein shown as having a knurled head. The feed-rod 13 also passes through a guide 14, which is bracketed on a pivot 14', screwed into a lug attached to the carriage 2. splineways in a guide-sleeve 14, are attached to the feed-rod 13 to preventit from rotating. At one end the rod 13 is attached radially to the curved foot 15, and it may be screwed into a hub 15', formed on the inner curved edge of said foot and retained in any desired position angularly of the axis of the hub 15' by a jam-nut 15".l Situated on one side of the shears S is a slideway w, (see more particularly Fig. 14,) on which a feed-actuator 16 is adjustably mounted to slide lengthwise of the machine, the same being secured in position on the slideway w by a set-screw 16', which is tapped through the web of the feedactuator and screws against the surface of the slideway w, thus binding the feed-actuator 16 against the inner faces of the slideway w. The feed-actuator 16 has an outer member 16", rigidly attached thereto and adapted in form and by its position to be engaged by and to lift the foot 15 of the feed-rod 13 when the latter, with the carriage 2, is moved in either direction longitudinally of the machine, as hereinafter related. While but one feed-actuator is shown, a plurality may be used, if necessary, and they, with a plurality of feet, such as 15, may be disposed in diiferent planes of operation.

Mounted upon the slides 6 6, respectively, are shown pedestals P P, which support niotors 20 20and on the shafts ofthe latter are mounted pulleys 20 20', which are respectively belted to pulleys 7' 7', severally mounted on the respective arbors 7.

While the elements as thus far described are more particularly adapted for operation upon bodies which may rest upon any suitable support apart from the machine proper, nevertheless l may so form all of said elements as to adapt them severally and collectively to operate upon parts which may be secured upon the shears of the machine. This I may effect, for instance, by arching the carriage 2 and by mounting the operative members, herein shown as grindingwheels 8 8 between the arbor-journals, or by making a suitable adaptation of the elements and organization embraced in my invention I may operate simultaneously upon several parts, which may be mounted, respectively, in the several positions mentioned.

A leading member, which may be of any desired form, is shown herein as a screw-shaft 17, jonrnaled at each end of the shears S and engaging a threaded nut 2, which is secured to the carriage 2. At one end the screw-shaft 17 is provided with a collar 17', Xed thereon and contacting with one end of a journal-box, and at the other end of said box the screwshaft/has a washer 17" and apair of jam-nuts Splines 13' 13', movable in IOO IIO

17"' 17"', the latter being adjustable to prevent end play of the shaft 17. Near the other end of said shaft a loose pulley 18 is in this instance mounted thereon between two tight pulleys 18' 18', the latter serving as collars to retain the loose pulley in position axially of the shaft. A pair of belts, one of which, 19, is straight and the other, 19', is crossed, are used to communicate power to the pulleys 18' 18' from a drum-pulley 20", mounted on the rotatable shaft of a power-supplying device 20a, which may be similar to those hereinbefore referred to and may be similarly mounted on a pedestal P. The belts 19 19' may conveniently be shifted axially of the pulleys 18 18' by slotted arms 2l' 21', through which they pass, (see more particularly Fig. 11,) the arms 21 21' being rigidly secured to the reciprocatable bar 2l, which is mounted in a bracket b, which is secured to a larger bracket B, which in turn is secured to the shears S and is furnished with an outrigged journal-bearing B' for the screw-shaft 17. At one end the bar 2l is pivoted to a rocker-arm 22", which in turn is pivoted in suitable supports by means of a rock-shaft 22, on which a second arm 22' is also mounted. The latter is pivotally connected with a reciprocatable bar 23, which may extend throughout the whole length of the shears S and be mounted in lugs secured to the latter and may also be supported in a lug 2b, secured lto the carriage 2. Adjustable stops, shown as collars 23' 23', each of which is furnished with a setscrew 28" 23", are mounted on the reciprocatable bar 23, one at each side of the lug 2".

In operation, assuming that a body to be surfaced has been properly positioned relative to the machine, (see, for instance, Fig. 2, where X may represent such a body with faces one wheel-arbor 7, with its slide 6, may be adjusted parallelly of the face a", and the other arbor and slide may be adjusted parallelly of the face m', said adjustments being readily effected by suitably swinging the angularly-adjustable members 5 5 on the pivot-studs 4" 4", respectively, according to indications read on the graduated arc, after which the members 5 5 may be secured in their respective positions by means of the bindingbolts 5' 5'. By rotating the hand-wheels 3C 3C the grinding-wheels 8 8 may be respectively either raised or lowered to the proper levels for-operation on the faces ce and cc'. By rotating the hand-wheels 9" 9" the grindingwheels may be brought to the proper position transversely of the body X to begin operations upon the latter. Thefeed-actuatorset-screw 16'beingloosened,the actuator may now be adjusted longitudinally of the machine, so that the member 16" may properly engage the foot 15 of the feed-rod 13 adjacent to the end of the carriage-traverse, the actuator 16 being thereafter retained in position by the set-screw 1G', as before related. The feed-rod 13 may now be secured in the pivot-head 12" after being either raised or lowered, as the case may be, in order to secure thereby an adequate amount of motion of the arm 10', pawl 10, ratchet-wheel 9"', and feed-screw shaft 9. If necessary, the clamp 11 may also be adjusted in the arm 10 to assistin effecting the object desired, which, as will readily be seen, is a proper feeding movement of the wheels 8 8, respectively, across the surfaces a: and x'. Finally by properly adjusting the stop-collars 23 23' on the reversing-bar 23 the operator may provide for a definite amount of movement of the carriage 2 between the 0perations of the lead-screw-reversing mechanism. If the motors 20 2O vbe now started, they will operate the stock-removing instrumentalities or grinding-wheels, and finally if the motor 2OfL be started the wheels 8 8 will be reciprocated upon the stock longitudinally of the machine and be fed across it transversely of the machine.

Having described my invention, l claim- 1. In a machine for finishing plane surfaces, the combination of a rotatable stock-removing instrumentality whose axis is disposed transversely to the machine, means for angularly adjusting the axis in the plane transverse to the machine which passes through said axis, and means for removing said instrumentality to and fro in the direction of its adjusted axis.

2. In a machine for finishing plane surfaces, the combination of a rotatable stock-removing instrumentality movable -both longitudinally and transversely of the machine and whose axis is disposed transverse to the line of such longitudinal movement, means for angularly adjusting the axis in the plane transverse to the line of said longitudinal movement, and means for moving said instrumentality to and fro in the direction of its adjusted axis.

3. in amachine for linishingplane surfaces, the combination of a rotatable stock-removing instrumentality adjustable vertically of the machine and movable both longitudinally and transversely thereof and whose axis is disposed transverse to the line of such longitudinal movement, means for angularly adjustine,` the axis in the plane transverse to the machine which passes through said axis, and means for moving said instrumentality to and fro in the direction of its adjusted axis.

4. lnamachine forfinishingplanesurfaces, the combination of a supporting-bed, a feedactuator adjustable longitudinally of the machine, a rotatable stock-removing instrumentality shiftable transversely of the machine at an angle to the plane of the supporting` bed in the direction of its axis, and feed mechanism actuatable by the feed-actuator.

5. ln a machine for tinishingplane surfaces, the combination of a supporting-bed, a feedactuator adjustable longitudinally of the machine, a rotatable stock-removing instrumentality adj ustable vertically of the m achineand whose axis maybe adj usted in the plane trans- IOO IIO

verse to the machine which passes through its axis; and feed mechanism actuatable by the feed-actuator.

6. Inamachineforfinishingplanesurfaces, the combination of a supporting-bed, a feedactuator adjustable longitudinally of the machine, a rotatable stock-removing instrumentality adj ustable vertically of the machine and movable both longitudinally of the machine and transversely thereof at an angle to the plane of the supporting-bed, and feed mechanism actuatable by the feed-actuator.

7. Inamachine for finishing plane surfaces, the combination of a supporting-bed having horizontal ways, a carriage mounted thereon, a slide on the carriage angularly adjustable in avertical plane and movable transversely of said bed in the line of its adjusted axis, a stock-removing instrumentality mounted on and movable with the slide, and a motor for said instrumentality mounted on and movable With the slide.

8. In a machine for finishing plane surfaces, the combination of a supporting-bed having horizontal ways, a carriage, a slide ou the carriage adjustable vertically of the machine, a slide angularly adjustable in a vertical plane and movable transversely of said bed in the line of its adjustment,a rotatable stock-removing instrumentality mounted on and movable with the second-mentioned slide, and a motor for said instrumentality mounted on and movable with said angularly-adjustable slide.

9. In a machine for nishing plane surfaces, the combination of a slide mounted to move transversely of the machine and shiftable longitudinally thereof and angularly adjustable in a plane transverse to the machine, a stockremoving instrumentality mounted onv and movable with the slide, and a motor mounted on, and movable with the slide.

10. Ina machine for iinishing plane surfaces, the combination of a slide mounted to move transversely of the machine and adjustable vertically thereof and angularly adjustable in a plane transverse to the machine, a stock-removing instrumentality mounted on and movable with the slide, and a motor mounted on and movable with the slide.

Il. In a machine for finishing plane surfaces, the combination of a slide movable both transversely and longitudinally of the machine; .a rotatable stock-removing instrumentality mounted on and movable with the slide; a motor mounted on and movable with the slide; and means for communicating power from the motor to operate the stockremoving instrumentality.

12. In a machine for finishing plane surfaces, the combination of a slide mounted to move transversely of the machine Aand movablelongitudinally thereof; and angularly adjustable in a plane transverse to the machine and parallel to such line of transverse movement; a stock removing instrumentality mounted on and movable with the slide; a motor mounted on and movable with the slide;

and means for communicating powerfrom the motor to operate the stock-removing instrumentality.

13. In a machine for finishing plane surfaces, the combination of a slide mounted to move transversely of the machine, adjustable vertically thereof and movable longitudinally thereof; and angularly adjustable in a plane transverse to the machine and parallel to such line of transverse movement; a stock-removinginstrumentality mounted on and movable with the slide; a motor mounted on and movable Wi'ththe slide; and means for communicating power from the motor to operate the stock-removing instrumentality.

14. In a machine for finishing plane surfaces, the combination of a slide mounted to move longitudinally thereof and transversely thereof in the direction of its angular adjustment in a plane transverse of the machine, a rotatable stock removing instrumentality mounted on and movable with the slide, a motor mounted on and movable with the slide, means for communicating power from the motor to rotate the stock-removing iustrumentality, means for moving the slide longitudinally and a feed mechanism for shifting it in said transverse direction.

15. In a machine for finishing plane surfaces, the combination of a slide mounted to move longitudinally thereof and transversely thereof in the line of its angular adjustment in a Vplane transverse to the machine, a rotatable stock-removing instrumentality mounted on and movable with the slide, a motor mounted on and movable with the slide, means for communicating power from the motor to rotate the stock-removing instrumentality, a screw for effecting the longitudinal movement of the slide, and adjustable feed mechanism for effecting its said transverse movement.

16. In a machine for finishing planesurfaces, the combination of a slide mounted to move transversely of the machine and movable both transversely and longitudinally thereof and angularly adjustable in a plane transverse to the machine and parallel to such line of transverse movement; a rotatable stock-removing instrumentality mounted on and movable with the slide; a motor mounted on and movable with the slide; and means for communicating power from the motor to rotate the stock-removing instrumentality.

17. In a machine for finishing plane surfaces, the combination of a slide mounted to move transversely of the machine, adjustable vertically thereof and reciprocatable longitudinally thereof and angularly adjustable in a plane transverse to the machine and parallel to such line of transverse movement; a rotatable stock-removing instrumentality mounted on and movable with the slide; a motor mounted on and movable with the slide; and means for communicating power from the motor to rotate the stock-removing instrumentality.

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18. In a machine for finishing plane surfaces, the combination of a carriage reciprocatable longitudinally thereof and having columns disposed thereon; a cross-rail mounted on said columns and shiftable vertically thereof; a member pivoted on said cross-rail and angularly adjustable about an axis disposed in line with the direction of longitudinal reciprocation of the carriage; a slide mounted on the angularly-adjustable member and shiftable transversely of the machine; and a stock-removing instrumentality mounted on the slide.

19. In a machine for finishing plane surfaces, the combination of a carriage reciprocatable longitudinally thereof and having columns disposed thereon; a cross-rail mounted on said columns and shiftable vertically thereof; a member pivoted on said cross-rail and angularly adjustable about an axis disposed in line With thedirection of longitudinal reciprocation of the carriage; a slide mounted on the angularly-adjustable meinberand shiftable transversely of t'he machine; a stock-removing instrumentality mounted on and movable With the slide; a motor mounted on and movable With the slide; and means for communicating power' from the motor to operate the stock-removing instrumentality.

20. In a machine for iinishing plane surfaces, the combination of a carriage reciprocatable longitudinally thereof and having columns disposed thereon; a cross-rail mounted on said columns and shiftable vertically thereof; a member pivoted on said cross-rail and angularly adjust-able about an axis disposed in line with the direction of longitudi-r nal reciprocation of the carriage; a slide mounted on the angularly-adjustable member and shiftable transversely of the machine; a feed-actuator shiftable longitudinally of the machine; a stock-removing instrumentality mounted on the slide; and feed mechanism therefor actuatable by the feed-actuator.

2l. In a machine for finishing plane surfaces, the combination of a carriage reciprocatable longitudinally thereof and having columns disposed thereon; a cross-rail mounted on said columns and shiftable vertically thereof a member pivoted on said cross-rail and angularly adjustable about an axis disposed in line With 'the direction of longitudinal reciprocation of the carriage; a slide mounted on the angularly-adjustable member and reciprocatable transversely of the machine; a feedactuator shiftable longitudinally of the machine; a stock removing instrumentality mounted on the slide; feed mechanism therefor actuatable by the feed-actuator; a motor mounted on and movable with the slide; and means for communicating power from the motor to operate the stock-removing instrumentality.

22. In a'machine for finishing plane surfaces, the combination of a carriage having columns disposed thereon; a cross-rail mounted on said columns and shiftable vertically thereof; a member pivoted on said cross-rail and angularly adjustable about an axis disposed in line with the direction of longitudinal reciprocation ot' the carriage; a slide mounted on the angularly-adjustable mem ber; a stock-removing instrumentality mounted on the slide; and feed mechanism for shifting the slide transversely of the machine.

23. In a machine for finishing plane surfaces, the combination of a carriage having columns disposed thereon; mechanism for reciprocating the carriage longitudinally of the machine; a cross-rail mounted on the columns of the carriage and shiftable vertically thereof; a member pivoted on the cross-rail and angularly adjustable about an axis disposed in line with the direction of longitudinal reciprocation of the carriage; a slide mounted on the anguiarly-adjustable member; and a stock-removing instrumentality mounted on the slide.

2li. In a machine for finishing plane sur-v faces, the combination of a carriage having columns disposed thereon; a cross-rail mounted on the columns and shiftable vertically thereof; an angulary-adjustable member pivoted on said cross-rail; a slide mounted on the angularly adjustable member; a stock-.removing instrumentality mounted onthe slide; feed mechanism for shifting the slide transversely of the machine; a motor mounted on and movable With the slide; and means for communicating power from the motor to opcrate the stock-removinginstrumentality.

25. In a machine for finishing plane surfaces; the combination of a carriage having columns disposed thereon; mechanism for reciprocating the carriage longitudinally of the machine; a cross-rail mounted on the columns ofthe carriage; an angularly-adj ustable member-pivoted on said cross-rail; a slide mounted on the angularly-adjustable member; a stock-removing instrumentality mounted on the slide; a motor mounted on and movable With the slide; and means for communicating power from the motor to operate the stockremoving instrumentality.

26. In a machine for iinishing plane surfaces, the combination of a carriage having columns disposed thereon; mechanism for reciprocating the carriage longitudinally of the machine; across-railmounted on the columns of the carriage; an angularly-adj ustable member pivoted on said cross-rail; aslide mounted on the angularly-adjustable member; a stock-removing instrumentality mounted on the slide; and means for automatically reversing the mechanism for reciprocating the carriage longitudinally of the machine.

27. In a machine for nishing plane surfaces, the combination of a carriage having columns disposed thereon; a cross-rail mounted` on said columns and shiftable vertically thereof; an angularly-adj ustable member pivoted on said cross-rail; a slide mounted on the angularly-adjustable member; a feed-actuator shiftable longitudinally of the machine; a stock-removing instrumentality mounted on the slide; and feed mechanism therefor actuatable by the feed-actuator.

28. In amachiue for finishing plane surfaces, the combination of a plurality of rotatable stock-removing instrumentalities, and means for angularly adjusting the several axes thereof transversely of the machine.

29. In a machine for finishing plane surfaces, the combination of a plurality of rotatable stock-removing instrumentalities severally adjustable verticallyof the machine and severally shiftable transversely of the machineandreciprocatablelongitudinally thereof; and means for angularly adjusting therespective axes of said instru mentalities transversely of the machine.'

30. In a machine for finishing plane surfaces, the combination of a feed-actuator adjustably shiftable longitudinally of the machine; a plurality of stock-removing instrumentalities, severally shiftable transversely of the machine; and a plurality of feed mechanisms for said instrumentalities, severally actuatable by the feed-actuator.

3l. In a machine for finishing plane surfaces, they combination of a feed-actuator adjustably shiftable longitudinally of the machine; a plurality of rotatable stock-removing instrumentalities, severally adjustable vertically of t-he machine and movable both longitudinally and transversely of the machine; and a plurality of feed mechanisms for said instrumentalities, severally actuatable by the feed-actuator.

32. In a machine for finishing plane surfaces, the combination of a plurality of slides severally shiftable transversely of the machine; a plurality of stock-removing instrumentalities severally mounted on and movable with the respective slides; a plurality of motors severally mounted on and movable with the respective slides; and means for communicating power from the motors to operate the stock-removing instrumentalities.

33 In a machine for finishing plane surfaces, the combination of a plurality of angularly-adjustable slides severally mounted transversely of the machine, adjustable vertically thereof and movable both transversely and longitudinally thereof; a plurality of stock removingr instrumentalities mounted on and movable with the respective slides; a plurality of motors severally mounted on and movable with the respective slides; and means for communicating power from the motors to operate the stock-removing instrumentalities.

34. In a machine for finishing plane surfaces, the combination of a plurality of angularly-adjustable slides severally mounted transversely thereof; a plurality of rotatable stockremoving instru mentalities severallyT mounted on and movable with the respective slides; a pluralityof motors severally mounted on and movable with the respective slides; and means for communicating power from the motors to rotate the stockremoving instrumentalities. f

35. In a machine for finishing plane surfaces, the combination of a plurality of angularly-adjustable slides severally mounted transversely of the machine'and adjustable vertically thereof; a plurality of rotatable stock removing instrumentalities severally mounted onand movable with the respective slides; a plurality of motors severally mounted on and movable with the respective slides; and means for communicating power from the motors to rotate the stock-removing instrumentalities.

36. In a machine for finishing plane surfaces, the combination of a plurality of slides severally adjusted vertically of xthe machine and shiftable transversely thereof; a plurality of rotatable stock removing instrumentalities severally mounted on and movable with the respective slides; a plurality of motors severally mounted on and movable with the respective slides; and means for communicating power from the motors to rotate the stock-removing instrumentalities.

37. In a machine for finishing plane surfaces, the combination of a plurality of angularly-adjustable slides severallyY mounted transversely of the machine and movable both transversely and longitudinally thereof a plurality of rotatable stock-removing instrumentalities severally mounted on and movable with the respective slides; a plurality of motors severally mountedl on and movable with the respective slides; and means for communicating power from the motors to rotate the stock-removing instrumentalities. v

38. In a machine for finishing plane surfaces, the combination of a plurality of angularly-adjustable slides severally mounted transversely of the machine, adjustable vertically thereof and shiftahle transversely thereof; a plurality of rotatable stock-removing instrumeutalities severally mounted on and movable with the respective slides; a plurality of motors severally mounted on and movable with the respective slides; and means for communicating power from the motors to rotate the stock-removing instrumentalities.

39. In a machine for finishing plane surfaces, the combination of a carriage reciprocatable longitudinally thereof and having columns diposed thereon; a plurality of crossrails mounted on said columns and severally shiftable vertically thereof; a plurality of angularly-adjustable members severally pivoted on the respective cross-rails a plurality of slides severally mounted on the respective angularly-adjustable members and shiftable transversely of the machine; and a plurality IOO of stock-removing instrumentalities severally mounted on the respective slides.

40. In a machine for finishing plane surfaces, the combination of a carriage reciprocatable longitudinally thereof and having columns disposed thereon; a plurality of crossrails mounted on said columns and severally shiftable vertically thereof; a plurality of angularly-adjustable members severally pivoted on the respective cross-rails; a plurality of slides severally mounted on the respective angularly-adjustablemembers and shiftable transversely of the machine; a plurality of stock removing instrumentalities mounted on and movable With the respective slides; a plurality of motors severally mounted on and movable With the respective slides; and means for communicating power from the motors to operate the stock1emovin instrumentalities.

4l. In a machine for finishing plane surfaces, the combination of a carriage reciprocatable longitudinally thereof and having columns disposed thereon; a plurality of crossrails mounted on said columns and severally shiftable vertically thereof; a plurality of angularly-adjustable members severally pivoted on the respective cross-rails; a plurality of slides severally mounted on the respective angularly-adjustable members and shiftable transversely of the machine; a feed-actuator shiftable longitudinally of the machine; a plurality ot' stoclcremoving instru mentalities severally mounted on the respective slides; and feed mechanism therefor actuatable by the feed-actuator.

42. In a machine for finishing plane surfaces, the combination of a carriage having columns disposed thereon a plurality of cross rails mounted on said columnsand severally shiftable vertically thereof; a plurality of angularly-adjustable members severally pivoted on the respective cross-rails; a plurality of slides severally mounted on the respective angularly-adj ustable members; a plurality of stock removing instrumentalities mounted on the respective slides; and feed mechanism for shifting the slides transversely of the machine. V

43. In a machine for finishing plane surfaces, the combination of a carriage having columns disposed thereon; mechanism for reciprocating the carriage longitudinally of the machine; a plurality of cross-rails mounted on the columns of the carriage and severally shiftable vertically thereof a plurality of angularly-adjustable members severally pivoted on the respective cross-rails; a plurality of slides severally mounted on the respective angularly-adjustable members; and a plurality of stock-removing instrumentalities severally mounted on the respective slides.

44. In a machine for finishing plane surfaces, the combination of a carriage having machine; a plurality of cross-rails mounted on the columns of the carriage and severally shiftable vertically thereof; a plurality of angularly-adjustable members severally pivoted ou the respective cross-rails a plurality of slides severally mounted on the respective angularly-adjustable members; a plurality of stock-removing instrumentalities severally mounted on the respective slides; and feed mechanism for shifting the slides transversely of the machine.

45. In a machine for finishing plane surfaces, the combination of a carriage having columns disposed thereon; a plurality of cross-rails mounted on the columns and severally shii'table vertically thereof; a plurality of singularly-adjustable members severally pivoted on the respective cross-rails; a plurality of slides severally mounted on the angularly-adjustable members; a plurality of stock-removing instrumentalities severally mounted on the respective slides; feed mechanism for shifting the slides transversely of the machine; a plurality of motors severally mounted on and. movable with the respective slides; and means for communicating power from the motors to operate the stock-removing instrumentalities.

46. In a machine for finishing plane surfaces; the combination of a carriage having columns disposed thereon; mechanism for reciprocating the carriage longitudinally of the machine; a plurality of cross-rails severally mounted on the columns of the carriage; a plurality of angularly-adjustable members severally pivoted on the respective crossrails; a plurality of slides severally mounted on the respective angularly-adjustable members; a plurality of stock-removing instru mentalities severally mounted on the respective slides; a plurality of motors severally mounted on and movable with the respective slides; and means for communicating power from the motors to operate the stock-removing instrumentalities.

47. In a machine for finishing plane surfaces, the combination of a carriage having columns disposed thereon; mechanism for reciprocating the carriage longitudinally of the machine; a plurality of crossrails severally mounted on the columns of the carriage; a plurality of angularly-adjustable members severally pivoted on the respective crossrails; a plurality of slides severally mounted on the respective angularly-adjustable members; a plurality of stock-removing instrumentalities severally mounted on the respective slides; and means for automatically reversing the mechanism for reciprocating the carriage longitudinally of the machine..

48. In a machine for finishing piane surfaces, the combination of a carriage having columns disposed thereon; a plurality of cross-rails mounted on said columns and severally shiftable vertically thereof; a plurality IOO IIO

of angu'lerly-adjustable members severallyl speotive slides; and feed mechanism fol-seid pivoted on the respective cross-rails; a pluinstrumentelities actua-table by the feed-ae rality of slides severally mounted on the ietuatoi. speotive engularly-adjustable members; e HENRY D. HIBBARD. feed-actuator shifteble longitudinally of the Witnesses:

machine; a plurality of stock-removing in- JOHN O. SEIFERT,

strnmeutalities severally mounted on the re REGINALD JACKSON. 

